A rheostat differs from potentiometer in the respect that it?

1 Answer

Answer :

A rheostat differs from potentiometer in the respect that it has higher wattage rating.

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Description : what is Rheostat ?

Last Answer : Rheostat is varible resistance device which gives large range variation in resistance generally used for operating electrical motors

Description : When the voltage across a battery is measured using a D.C potentiometer, the reading shows 1.08 V. But when the same voltage is measured using a Permanent Magnet Moving Coil (PMMC) voltmeter, the voltmeter reading shows 0.99 ... resistance of the battery, in Ohm , is (A) 150 (B) 100 (C) 50 (D) 200

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Last Answer : The rheostat may have two connections, one fixed and one moveable; the potentiometer always has three connections, one moveable and two fixed

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Last Answer : Answer : D

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Description : Moving the rheostat handle shown in the illustration, that is used to control a DC generator, towards the 'raise' direction will increase the _____________. EL-0030 A. field resistance B. armature resistance C. armature speed D. line voltage

Last Answer : Answer: D

Description : An open occurring within the field rheostat of an AC generator can be detected by short circuiting its terminals and observing a ____________. A. negative deflection of the wattmeter pointer B. ... of the wattmeter pointer C. buildup of alternator voltage D. low, but constant alternator voltage

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Description : The kilowatt load can be adjusted on a paralleled generator by using the _____________. A. field rheostat B. governor control C. automatic voltage regulators D. hand tachometer

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Description : The KW load is evenly distributed between two alternators just placed in parallel by adjusting _____________. A. a balance coil B. the governor settings C. the field excitation D. a rheostat

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Description : What is the power rating safety factor for the light dimming rheostat shown in the illustration at '77H'? EL-0100 A. 1 B. 2 C. 3 D. 6

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Description : Which of the instruments listed is used to check insulation resistance? A. Magneto B. Megohmmeter C. Dynamometer D. Rheostat

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Last Answer : Answer: A